Temperature effects on the neutron matter equation of state obtained from chiral effective field theory

Abstract

Temperature effects on the neutron matter equation of state are investigated in the framework of chiral effective field theory. Latest, state-of-the-art chiral two-nucleon forces are applied from third to fifth order in the chiral expansion together with chiral three-nucleon forces, allowing for a determination of the truncation error of the theoretical predictions. The thermodynamic quantities considered include the chemical potential, the internal energy, the entropy, and the free energy. In general, good order-by-order convergence of all predictions is observed. As to be expected, temperature effects are largest at low density. The temperature dependence of the chiral three-nucleon force turns out to be weak.

arXiv comment9 pages, 9 figures

References in corpus (48)

• The high-precision, charge-dependent Bonn nucleon-nucleon potential (CD-Bonn)
• Chiral effective field theory and nuclear forces
• Accurate Charge-Dependent Nucleon-Nucleon Potential at Fourth Order of Chiral Perturbation Theory
• Quantum Monte Carlo methods for nuclear physics
• Composition and Structure of Protoneutron Stars
• Three-Nucleon Forces from Chiral Effective Field Theory
• Improved nuclear matter calculations from chiral low-momentum interactions
• Phase Transitions in Warm, Asymmetric Nuclear Matter
• Improved chiral nucleon-nucleon potential up to next-to-next-to-next-to-leading order
• Three-Body Interactions Among Nucleons and Pions
• Chiral three-nucleon forces and neutron matter
• Neutron matter at next-to-next-to-next-to-leading order in chiral effective field theory
• High-quality two-nucleon potentials up to fifth order of the chiral expansion
• Chiral interactions up to next-to-next-to-next-to-leading order and nuclear saturation
• Quantum Monte Carlo Calculations with Chiral Effective Field Theory Interactions
• Coupled-cluster calculations of nucleonic matter
• Density-dependent effective nucleon-nucleon interaction from chiral three-nucleon forces
• Chiral three-nucleon force at N^4LO I: Longest-range contributions
• Neutron matter from chiral two- and three-nucleon calculations up to N${}^3$LO
• Self-consistent Green's functions formalism with three-body interactions
• The nuclear matter equation of state with consistent two- and three-body perturbative chiral interactions
• Gravitational waves from relativistic neutron star mergers with nonzero-temperature equations of state
• Correlations in Hot Asymmetric Nuclear Matter
• Equation of state of nuclear and neutron matter at third-order in perturbation theory from chiral EFT
• Symmetric nuclear matter with chiral three-nucleon forces in the self-consistent Green's functions approach
• Reduced regulator dependence of neutron-matter predictions with chiral interactions
• Towards order-by-order calculations of the nuclear and neutron matter equations of state in chiral effective field theory
• The Virial Equation of State of Low-Density Neutron Matter
• Thermodynamics of isospin-asymmetric nuclear matter from chiral effective field theory
• A Self-Consistent Solution to the Nuclear Many-Body Problem at Finite Temperature
• Efficient calculation of chiral three-nucleon forces up to N3LO for ab initio studies
• Nuclear thermodynamics from chiral low-momentum interactions
• Chiral three-nucleon interaction and the carbon-14 dating beta decay
• Divergence of the isospin-asymmetry expansion of the nuclear equation of state in many-body perturbation theory
• $Abinitio$ constraints on thermal effects of the nuclear equation of state
• Hot neutron matter from a Self-Consistent Green's Functions approach
• Coupled-cluster studies of infinite nuclear matter
• Symmetric and asymmetric nuclear matter in the relativistic approach at finite temperatures
• Weinberg eigenvalues for chiral nucleon-nucleon interactions
• Microscopically constrained mean field models from chiral nuclear thermodynamics
• Equation of state for $\beta$-stable hot nuclear matter
• The entropy of a correlated system of nucleons
• Temperature and momentum dependence of single-particle properties in hot asymmetric nuclear matter
• Density-dependent NN-interaction from subleading chiral 3N-forces: Long-range terms
• Density-dependent NN-interaction from subleading chiral 3N-forces: short-range terms and relativistic corrections
• Temperature dependence of single-particle properties in nuclear matter
• Temperature and density dependence of asymmetric nuclear matter and protoneutron star properties within an extended relativistic mean field model
• Temperature-dependence of single-particle properties in isospin-symmetric and -asymmetric matter within the Dirac-Brueckner-Hartree-Fock model

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• Equation of State of Hot Neutron Star Matter using Finite Range Simple Effective Interaction